c5f73ed80c
This allows printing pointers to unsized types with the {:p} formatting
directive. The following impls are extended to unsized types:
- impl<'a, T: ?Sized> Pointer for &'a T
- impl<'a, T: ?Sized> Pointer for &'a mut T
- impl<T: ?Sized> Pointer for *const T
- impl<T: ?Sized> Pointer for *mut T
- impl<T: ?Sized> fmt::Pointer for Box<T>
- impl<T: ?Sized> fmt::Pointer for Rc<T>
- impl<T: ?Sized> fmt::Pointer for Arc<T>
31 lines
958 B
Rust
31 lines
958 B
Rust
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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mod builders;
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mod float;
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mod num;
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#[test]
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fn test_format_flags() {
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// No residual flags left by pointer formatting
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let p = "".as_ptr();
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assert_eq!(format!("{:p} {:x}", p, 16), format!("{:p} 10", p));
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assert_eq!(format!("{: >3}", 'a'), " a");
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}
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#[test]
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fn test_pointer_formats_data_pointer() {
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let b: &[u8] = b"";
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let s: &str = "";
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assert_eq!(format!("{:p}", s), format!("{:p}", s.as_ptr()));
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assert_eq!(format!("{:p}", b), format!("{:p}", b.as_ptr()));
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}
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